SE9903703D0 - Compression rings for column relief in continuous cooking vessels - Google Patents

Compression rings for column relief in continuous cooking vessels

Info

Publication number
SE9903703D0
SE9903703D0 SE9903703A SE9903703A SE9903703D0 SE 9903703 D0 SE9903703 D0 SE 9903703D0 SE 9903703 A SE9903703 A SE 9903703A SE 9903703 A SE9903703 A SE 9903703A SE 9903703 D0 SE9903703 D0 SE 9903703D0
Authority
SE
Sweden
Prior art keywords
feet
vessel
compression rings
cooking vessels
continuous cooking
Prior art date
Application number
SE9903703A
Other languages
Swedish (sv)
Other versions
SE9903703L (en
Inventor
Jay K Sheerer
Original Assignee
Ahlstrom Machinery Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ahlstrom Machinery Inc filed Critical Ahlstrom Machinery Inc
Publication of SE9903703D0 publication Critical patent/SE9903703D0/en
Publication of SE9903703L publication Critical patent/SE9903703L/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00—Digesters
    • D21C7/06—Feeding devices

Abstract

The flow of a liquid slurry of comminuted cellulosic fibrous material (e.g. wood chips) in a vertical vessel is made more uniform by providing a plurality of vertically spaced sets of either substantially continuous or discontinuous protrusions which extend inwardly from the internal surface of the vessel a maximum distance of between about 2-12 inches. A preferred vessel is a continuous or batch digester. The protrusions may have an arcuate, rectangular, isosceles or scalene triangular, right triangular, or trapezoidal cross-section, and may be spaced from each other vertically between about 1-12 feet, and have a height of between about 1-3 feet. Discontinuous protrusions have a preferred arcuate spacing of between 1-10 feet.
SE9903703A 1998-10-15 1999-10-14 Compression rings for pillar relief in continuous cooking vessels SE9903703L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10440198P 1998-10-15 1998-10-15
US09/404,587 US6280569B1 (en) 1998-10-15 1999-09-24 Compression rings for column relief in continuous cooking vessels

Publications (2)

Publication Number Publication Date
SE9903703D0 true SE9903703D0 (en) 1999-10-14
SE9903703L SE9903703L (en) 2000-04-16

Family

ID=26801501

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9903703A SE9903703L (en) 1998-10-15 1999-10-14 Compression rings for pillar relief in continuous cooking vessels

Country Status (5)

Country Link
US (4) US6280569B1 (en)
JP (1) JP2000119982A (en)
CA (1) CA2286266A1 (en)
FI (1) FI19992216A (en)
SE (1) SE9903703L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080067124A1 (en) * 2006-09-19 2008-03-20 Kaczkowski Edward F Solvent recovery system for plastic dying operation
US7988822B2 (en) * 2007-10-10 2011-08-02 Andritz Inc. Treatment vessel for straw or other light bulky material
ZA200807859B (en) * 2007-10-10 2009-10-28 Andritz Inc Treatment vessel for straw or other light bulky material
WO2011053203A1 (en) * 2009-10-28 2011-05-05 Metso Paper Sweden Ab Method and arrangement for steaming and impregnating wood chips in a down flow vessel
US8916023B2 (en) 2011-03-18 2014-12-23 Andritz, Inc. Vapor phase hydrolysis vessel and methods related thereto
DK2689062T3 (en) 2011-03-25 2016-07-04 Andritz Inc Reactor vessel with each converging side wall panels

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035963A (en) * 1958-02-19 1962-05-22 Lummus Co Process for the continuous digestion of cellulosic materials
DE1223343B (en) * 1967-05-15 1966-08-25 Improved Machinery Inc Cylindrical edge filter
US4331509A (en) * 1980-07-07 1982-05-25 Esco Corporation Digester strainer locking assembly
US4721231A (en) 1980-09-08 1988-01-26 Kamyr, Inc. Chips bin blockage preventing
SE466706B (en) * 1990-07-20 1992-03-23 Kamyr Ab THE WALL GUARANTEES SEPARATION OF WETAFRAIN FROM A SCIENTIFIC PARTICLE MATERIAL
US5454490A (en) * 1993-10-01 1995-10-03 Kamyr, Inc. Conical insets for chip bin
US5454790A (en) * 1994-05-09 1995-10-03 Innerdyne, Inc. Method and apparatus for catheterization access

Also Published As

Publication number Publication date
SE9903703L (en) 2000-04-16
FI19992216A (en) 2000-04-15
US20020069992A1 (en) 2002-06-13
CA2286266A1 (en) 2000-04-15
US20030201080A1 (en) 2003-10-30
US20020059997A1 (en) 2002-05-23
JP2000119982A (en) 2000-04-25
US6280569B1 (en) 2001-08-28

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